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In this paper, we study a new style of error function of the constant modulus algorithm (CMA) and propose a new blind equalization algorithm based on a combination error function consisting of this new style of error function and a error function of decision directed (DD). Compared with CMA, the proposed algorithm has faster convergence rate and lower residual error, and can compensate phase offset...
The paper proposes a new family of combination blind equalization including a concurrent constant modulus algorithm (CMA) based on variable slope error function (VSCMA) and decision directed (DD) scheme (VSCMA+DD), and a concurrent VSCMA + DD and phase-locked loop (PLL) scheme (VSCMA + DD+PLL). Simulations with a common underwater acoustic channel and a time-varying Doppler underwater acoustic channel...
The computational complexity of fourth-order cumulants (FOC) estimation of quasi-stationary random process is high and it is very difficult to apply the FOC to solve the actual problem. For improving the practicability of the FOC, the FOC simplification calculation method is proposed based on its direct estimation formula and the relation between FOC recursive estimation and its computational complexity...
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